SIST EN 2929:2001

Aerospace series - Bolts, double hexagon head, relieved shank, long thread, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1 210 MPa (at ambient temperature)/730 °C

This standard specifies the characteristics of double hexagon headed bolts with relieved shank and long thread, in NI-P101HT, for aerospace applications. Classification: 1 210 MPa / 730 °C

Luft- und Raumfahrt - Zwölfkantschrauben, Dünnschaft, langes Gewinde, aus hochwarmfester Nickelbasislegierung NI-P101HT (Waspaloy) - Klasse: 1210 MPa (bei Raumtemperatur)/730°C

Diese Norm legt die Eigenschaften von Zwölfkantschrauben mit Dünnschaft und langem Gewinde, aus NI-P101HT, zur Verwendung in der Luft- und Raumfahrt fest. Klasse: 1 210 MPa / 730 °C

Série aérospatiale - Vis a tete bihexagonale, fut dégagé, filetage long, en alliage résistant a chaud a base de nickel NI-P101HT (Waspaloy) - Classification: 1210 MPa (a température ambiante)/730°C

La présente norme spécifie les caractéristiques des vis à tête bihexagonale à fût dégagé et à filetage long, en NI-P101HT, pour les applications aérospatiales. Classification: 1 210 MPa / 730 °C

Aerospace series - Bolts, double hexagon head, relieved shank, long thread, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1 210 MPa (at ambient temperature)/730 °C

General Information

• Status: Published
• Publication Date: 31-Dec-2000
• ICS: 49.030.20 - Bolts, screws, studs
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2001
• Due Date: 01-Jan-2001
• Completion Date: 01-Jan-2001
• Ref Project: EN 2929:1996 - Aerospace series - Bolts, double hexagon head, relieved shank, long thread, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1 210 MPa (at ambient temperature)/730 °C

Overview

EN 2929:1996 (CEN) defines the characteristics of aerospace bolts with a double hexagon head, relieved shank, and long thread, manufactured from the heat‑resisting nickel‑base alloy NI‑P101HT (Waspaloy). The standard covers mechanical classification for these fasteners - 1 210 MPa (at ambient temperature)/730 °C - and establishes the baseline requirements for use in high‑temperature aerospace applications. The Slovenian adoption appears as SIST EN 2929:2001, identical to EN 2929:1996.

Key Topics

• Bolt type and geometry: double hexagon head design, relieved (reduced) shank, and extended/long thread configuration - features relevant to assembly access and fatigue performance.
• Material specification: nickel‑base alloy NI‑P101HT (Waspaloy) selected for high temperature strength and oxidation resistance.
• Mechanical classification: designated strength class 1 210 MPa, with performance referenced at ambient conditions and at elevated temperature up to 730 °C.
• Characteristics and requirements: the standard specifies the essential characteristics that define suitability for aerospace use (material, mechanical performance class, and nominal bolt form).
• Identification and conformity: expectations for consistent product identification and conformity to the standard (typical for CEN aerospace standards) to support traceability and quality assurance.

Applications

EN 2929 targets high‑temperature aerospace fastening needs where elevated strength and heat resistance are critical:

• Fasteners for hot sections of gas turbines and engines
• Structural components exposed to sustained high temperatures
• Assemblies requiring corrosion/oxidation resistance under thermal load Because the standard is specific to Waspaloy (NI‑P101HT) and a high mechanical classification, these bolts are suited for critical aerospace environments rather than general‑purpose use.

Who uses this standard

• Aerospace fastener manufacturers producing nickel‑base alloy bolts
• Design engineers specifying high‑temperature fasteners in engine and airframe systems
• Procurement and quality managers ensuring specification compliance and traceability
• Maintenance, repair and overhaul (MRO) organizations replacing high‑temperature fasteners

Related Standards

• EN 2929 belongs to the CEN aerospace series covering fasteners. The Slovenian adoption is SIST EN 2929:2001 (identical text). For full implementation, users typically consult complementary standards on testing, material certification and dimensional tolerances relevant to aerospace fasteners.

Keywords: EN 2929:1996, NI‑P101HT, Waspaloy, double hexagon head bolts, relieved shank long thread, aerospace bolts, high‑temperature fasteners, 1210 MPa.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Bolts, double hexagon head, relieved shank, long thread, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1 210 MPa (at ambient temperature)/730 °CLuft- und Raumfahrt - Zwölfkantschrauben, Dünnschaft, langes Gewinde, aus hochwarmfester Nickelbasislegierung NI-P101HT (Waspaloy) - Klasse: 1210 MPa (bei Raumtemperatur)/730°CSérie aérospatiale - Vis a tete bihexagonale, fut dégagé, filetage long, en alliage résistant a chaud a base de nickel NI-P101HT (W
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